The paper describes a novel implementation of the piecewise linear interface-capturing volume-of-fluid method (PLIC-VOF) in axisymmetric cylindrical coordinates. principal innovative feature involved this work is that both forward and inverse reconstruction problems are solved analytically, resulting an appreciable speed-up computing time comparison with iterative approach. All formulae introdu...

for the Mini-Workshop “VMS and Stabilized FE” Stabilized Methods for Free-Surface Flow Simulations Marek Behr Chair for Computational Analysis of Technical Systems Center for Computational Engineering Science RWTH Aachen University Steinbachstr. 53B, 52074 Aachen, Germany [email protected] Free-surface flow simulations are an important design and analysis tool in many areas of engineerin...

We present an alternative video-making framework for children with tools that integrate video capture with movie production. We propose different forms of interaction with physical artifacts to capture storytelling. Play interactions as input to video editing systems assuage the interface complexities of film construction in commercial software. We aim to motivate young users in telling their s...

In this paper, we combine a high-order Discontinous Galerkin (DG) method and level set method solving the interface problem in a complex incompressible flow. The scheme is L2 stable and conservative. It improves the mass conservative property of the level set method. Numerical examples demonstrate the high order accuracy of the method and the high resolution especially when the interface underg...

We aim to support user interface designers in capturing, representing and reasoning about temporal information. We have developed a method to support user interface designers in considering how the temporal aspects of software impact the user. Importantly the method is based on a detailed analysis of data from a set of situated interviews that capture the views of practicing user interface desi...

In this paper, we propose a new numerical method for improving the mass conservation properties of the level set method when the interface is passively advected in a flow field. Our method uses Lagrangian marker particles to rebuild the level set in regions which are under-resolved. This is often the case for flows undergoing stretching and tearing. The overall method maintains a smooth geometr...

In this paper Natural user interface (NUI), its adaptations, and its implementations are presented. NUI is a humanmachine interface which has evolved from the way humans interact with each other and their surrounding environment. Gesture, color, speech recognition are used in NUI to identify the user and his actions, which can subsequently be interpreted to perform the relevant task. The task c...

We propose a coupling strategy for solving efficiently bifluid flows based on the Stokes equations. Our approach relies on a level set formulation of the interface capturing problem, and involves a finite element discretization for the fluid resolution, the method of characteristics for solving the advection of the interface and the anisotropic mesh adaptation of the computational domain in the...

In this paper, we will present two user interfaces we developed for a tutor on debugging programs. The second interface is reified with respect to the first, and is hence, better at capturing student misconceptions and promoting the development of an accurate mental model in the learner. We will discuss the rationale behind the interface, its significance, and its impact on the maintenance of t...

Web usability testing presents special challenges for taking notes about user behavior. Capturing user behavior accurately and completely for immediate reporting is difficult to accomplish in “real time,” with fast-clicking and complicated user interface elements to track. However, it is critical for the rapid usability feedback Web site developers demand. This article describes the challenges ...